Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Intangible Assets [Abstract]
Amortization expense for intangible assets	$ 2.2	$ 2.9	$ 9.2
Amortization expense relating to fresh start fair valuation of contracts-in-process	$ 1.5	$ 1.0	$ 2.9